Top-Rated Home Energy Auditors in Islip, NY
10 local auditors ranked by 118 Google reviews. Free to compare, no sign-up.
Short answer: The top-rated home energy auditors in Islip are Dilandro Andrews Engineering PLLC (5.0★, 24 reviews), Aberdeen Building Consulting (4.8★, 20 reviews), KOW Building Consultants (5.0★, 6 reviews).
Home energy auditors in Islip, ranked
- 5.0 (24 Google reviews)158 County Rd 39, Southampton, NY 11968
- 4.8 (20 Google reviews)143 Roebling St, Brooklyn, NY 11211
- 5.0 (6 Google reviews)1034 W Jericho Turnpike, Smithtown, NY 11787
- 5.0 (1 Google reviews)525 Eastport Manor Rd #1203, Manorville, NY 11949
- 4.5 (15 Google reviews)187 E Main St, Huntington, NY 11743
- 4.3 (3 Google reviews)159 NY-25A Bldg 1, Suite B, Miller Place, NY 11764
- 4.3 (7 Google reviews)220 E 42nd St 28th Floor, New York, NY 10017
- 4.2 (6 Google reviews)505 8th Ave Floor 24, New York, NY 10018
- 3.7 (3 Google reviews)1755 Sigsbee Rd, Mattituck, NY 11952
- Bright Power IncMost reviews3.2 (33 Google reviews)17 State St 27th Floor, New York, NY 10004
Every company here is on RESNET's 2026 list of HERS rating companies and has an office within 80 km of Islip. See every home energy auditor we list, rated or not. Check your utility's own assessment before you pay for an audit.
Together these 10 companies average 4.3★ across 118 reviews. Bright Power Inc has the most reviews (33).
Ranked by Google rating weighted by review count, collected October 2026. Rankings are not paid for. How we rank and how we make money.
Are you one of the home energy auditors in Islip? These are yours to use with clients:
- A rebate calculator for your website. Clients answer a few questions and see the rebates they can stack. Get the embed code.
- A one-page Islip rebate sheet to print or email to clients, with every open program, the main rule and the official source. Open the rebate sheet.
- Your top-rated badge, if you are listed here. Get your badge.
What a home energy audit costs in Islip
Some utility programs pay for the assessment. Ask each auditor for the price of the audit and any test-out visit after the work, so you can compare.
Check whether each one needs an energy assessment or pre-approval before work starts. That could cut your cost by up to $7,500 if you qualify. Most rebates have rules (income, your current heating, a registered contractor, approval before work starts).
Rebates: our verified program data, checked monthly. Always confirm the exact amount for your home.
What a home energy audit covers in Islip
A home energy auditor visits your home and finds where it wastes energy. Most test how much air leaks out with a blower door, check insulation in the attic, walls and basement, and look at your heating, cooling and hot water. You get a report that lists upgrades in order of value.
If your program needs an audit, book it first. Some utility insulation and air sealing programs pay only after an assessment, and some need it before any work starts. Ask your utility whether an outside auditor's report counts, or whether you must book through the program.
Before you hire a home energy auditor
- Ask whether they are BPI certified or a RESNET HERS rater, and whether they run a blower door test.
- Ask whether your utility's insulation or heat pump program accepts their report, or whether you must book through the program.
- Ask what the audit costs, what the report includes, and whether a test-out visit after the work costs extra.
- Ask whether they also sell or install upgrades. An auditor who does not sell gives the most neutral advice.
Questions about home energy auditors in Islip
Who is the best home energy auditor in Islip?
Based on Google reviews, the top-rated home energy auditors in Islip are Dilandro Andrews Engineering PLLC (5.0★, 24 reviews), Aberdeen Building Consulting (4.8★, 20 reviews), KOW Building Consultants (5.0★, 6 reviews). We rank by a review-weighted score, so companies with many strong reviews rank above those with only a few.
How are the home energy auditors in Islip ranked?
We list 10 home energy auditor companies in Islip, ranked by Google rating weighted by review count. Together they have 118 Google reviews and average 4.3 stars, collected October 2026. Bright Power Inc has the most reviews (33). No company pays to be listed or ranked.
How much does a home energy audit cost in Islip?
Prices vary by auditor and by the size of your home. Some utility programs pay for the assessment. Ask each auditor for the price of the audit and any test-out visit after the work.
Are there rebates for home energy upgrades in Islip?
Yes. Our verified program data shows heat pump rebates up to $7,500 open in Islip. Check whether each one needs an energy assessment before work starts. Most rebates have rules, such as income, your current heating, a registered contractor, or approval before work starts, so check the rebate page before you sign.
Do I need an energy audit before I upgrade in Islip?
If your program needs an audit, book it first. Some utility insulation and air sealing programs pay only after an assessment, and some need it before any work starts. Ask your utility whether an outside auditor's report counts, or whether you must book through the program.
What should I ask a home energy auditor before I hire?
Ask whether they are BPI certified or a RESNET HERS rater, and whether they run a blower door test. Ask whether your utility's insulation or heat pump program accepts their report, or whether you must book through the program. Ask what the audit costs, what the report includes, and whether a test-out visit after the work costs extra.
Before you call anyone, check what home energy auditor rebates you can get in Islip. Many programs require approval or a registered contractor before work starts.
Planning more upgrades? See the top-rated heat pump installers, solar installers, insulation installers, home battery installers in Islip.
See every rebate in Islip
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